Home / 13,347.04-18,421.12-7,970.24

Finding the Fourth Proportional to 13,347.04, 18,421.12 and 7,970.24

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Solution

The fourth proportional to 13,347.04, 18,421.12 and 7,970.24 is: 11,000.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,347.04 : 18,421.12 = 7,970.24 : x
  2. Step 2: Convert to fraction form
    13,347.04/18,421.12 = 7,970.24/x
  3. Step 3: Cross multiply
    13,347.04x = 18,421.12 × 7,970.24
  4. Step 4: Simplify right side
    13,347.04x = 146,820,747.47
  5. Step 5: Solve for x
    x = 146,820,747.47/13,347.04
  6. Step 6: Final answer
    x = 11,000.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.